//==========================================================================
// Copyright (c) 2000-2008,  Elastos, Inc.  All Rights Reserved.
//==========================================================================
/*
 *
 * Copyright (c) 1987  X Consortium
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
 * X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the name of the X Consortium shall not be
 * used in advertising or otherwise to promote the sale, use or other dealings
 * in this Software without prior written authorization from the X Consortium.
 *
 *
 * Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
 *
 *                         All Rights Reserved
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose and without fee is hereby granted,
 * provided that the above copyright notice appear in all copies and that
 * both that copyright notice and this permission notice appear in
 * supporting documentation, and that the name of Digital not be
 * used in advertising or publicity pertaining to distribution of the
 * software without specific, written prior permission.
 *
 * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
 * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
 * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
 * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 *
 *  * Copyright 1992, 1993 Data General Corporation;
 * Copyright 1992, 1993 OMRON Corporation
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that the
 * above copyright notice appear in all copies and that both that copyright
 * notice and this permission notice appear in supporting documentation, and that
 * neither the name OMRON or DATA GENERAL be used in advertising or publicity
 * pertaining to distribution of the software without specific, written prior
 * permission of the party whose name is to be used.  Neither OMRON or
 * DATA GENERAL make any representation about the suitability of this software
 * for any purpose.  It is provided "as is" without express or implied warranty.
 *
 * OMRON AND DATA GENERAL EACH DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
 * IN NO EVENT SHALL OMRON OR DATA GENERAL BE LIABLE FOR ANY SPECIAL, INDIRECT
 * OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THIS SOFTWARE.
 *
 */
#ifndef MISC_H
#define MISC_H 1
/*
 *  X internal definitions
 *
 */

extern unsigned long globalSerialNumber;
extern unsigned long serverGeneration;

#include <Xosdefs.h>
#include <Xfuncproto.h>
#include <Xmd.h>
#include <X.h>
#include <elatypes.h>

typedef _ELASTOS UInt16 ATOM;
#ifndef NULL
#ifndef X_NOT_STDC_ENV
//#include <stddef.h>
#else
#define NULL            0
#endif
#endif

#ifndef MAXSCREENS
#define MAXSCREENS    3
#endif
#define MAXCLIENTS    128
#define MAXDITS        1
#define MAXEXTENSIONS    128
#define MAXFORMATS    8
#define MAXVISUALS_PER_SCREEN 50

typedef void *pointer;

typedef unsigned long PIXEL;
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif

#ifndef _XTYPEDEF_FONTPTR
typedef struct _Font *FontPtr; /* also in fonts/include/font.h */
#define _XTYPEDEF_FONTPTR
#endif

#ifndef _XTYPEDEF_CLIENTPTR
typedef struct _Client *ClientPtr; /* also in dix.h */
#define _XTYPEDEF_CLIENTPTR
#endif

#ifndef _XTYPEDEF_CALLBACKLISTPTR
typedef struct _CallbackList *CallbackListPtr; /* also in dix.h */
#define _XTYPEDEF_CALLBACKLISTPTR
#endif

typedef struct _xReq *xReqPtr;

#include "os.h"     /* for ALLOCATE_LOCAL and DEALLOCATE_LOCAL */
#include <Xfuncs.h> /* for bcopy, bzero, and bcmp */

#define NullBox ((BoxPtr)0)
#define MILLI_PER_MIN (1000 * 60)
#define MILLI_PER_SECOND (1000)

    /* this next is used with None and ParentRelative to tell
       PaintWin() what to use to paint the background. Also used
       in the macro IS_VALID_PIXMAP */

#define USE_BACKGROUND_PIXEL 3
#define USE_BORDER_PIXEL 3


/* byte swap a 32-bit literal */
#define lswapl(x) ((((x) & 0xff) << 24) |\
           (((x) & 0xff00) << 8) |\
           (((x) & 0xff0000) >> 8) |\
           (((x) >> 24) & 0xff))

/* byte swap a short literal */
#define lswaps(x) ((((x) & 0xff) << 8) | (((x) >> 8) & 0xff))

// TODO: should be removed
#ifndef min
#define min(a, b) (((a) < (b)) ? (a) : (b))
#endif
#ifndef max
#define max(a, b) (((a) > (b)) ? (a) : (b))
#endif

#if 0
#ifndef abs
#define abs(a) ((a) > 0 ? (a) : -(a))
#endif
#endif

#ifndef Fabs
#define Fabs(a) ((a) > 0.0 ? (a) : -(a))    /* floating absolute value */
#endif
#define sign(x) ((x) < 0 ? -1 : ((x) > 0 ? 1 : 0))
/* this assumes b > 0 */
#define modulus(a, b, d)    if (((d) = (a) % (b)) < 0) (d) += (b)
/*
 * return the least significant bit in x which is set
 *
 * This works on 1's complement and 2's complement machines.
 * If you care about the extra instruction on 2's complement
 * machines, change to ((x) & (-(x)))
 */
#define lowbit(x) ((x) & (~(x) + 1))

#ifndef MAXSHORT
#define MAXSHORT 32767
#endif
#ifndef MINSHORT
#define MINSHORT -MAXSHORT
#endif


/* some macros to help swap requests, replies, and events */

#define LengthRestB(stuff) \
    ((client->req_len << 2) - sizeof(*stuff))

#define LengthRestS(stuff) \
    ((client->req_len << 1) - (sizeof(*stuff) >> 1))

#define LengthRestL(stuff) \
    (client->req_len - (sizeof(*stuff) >> 2))

#define SwapRestS(stuff) \
    SwapShorts((short *)(stuff + 1), LengthRestS(stuff))

#define SwapRestL(stuff) \
    SwapLongs((CARD32 *)(stuff + 1), LengthRestL(stuff))

/* byte swap a 32-bit value */
#define swapl(x, n) { \
         n = ((char *) (x))[0];\
         ((char *) (x))[0] = ((char *) (x))[3];\
         ((char *) (x))[3] = n;\
         n = ((char *) (x))[1];\
         ((char *) (x))[1] = ((char *) (x))[2];\
         ((char *) (x))[2] = n; }

/* byte swap a short */
#define swaps(x, n) { \
         n = ((char *) (x))[0];\
         ((char *) (x))[0] = ((char *) (x))[1];\
         ((char *) (x))[1] = n; }

/* copy 32-bit value from src to dst byteswapping on the way */
#define cpswapl(src, dst) { \
                 ((char *)&(dst))[0] = ((char *) &(src))[3];\
                 ((char *)&(dst))[1] = ((char *) &(src))[2];\
                 ((char *)&(dst))[2] = ((char *) &(src))[1];\
                 ((char *)&(dst))[3] = ((char *) &(src))[0]; }

/* copy short from src to dst byteswapping on the way */
#define cpswaps(src, dst) { \
         ((char *) &(dst))[0] = ((char *) &(src))[1];\
         ((char *) &(dst))[1] = ((char *) &(src))[0]; }

extern void SwapLongs(
    CARD32 *list,
    unsigned long count
);

extern void SwapShorts(

    short *list,
    unsigned long count

);

extern void MakePredeclaredAtoms(

    void

);

extern int Ones(

    unsigned long /*mask*/

);

typedef struct _xPoint *DDXPointPtr;
typedef struct _Box *BoxPtr;
typedef struct _xEvent *xEventPtr;
typedef struct _xRectangle *xRectanglePtr;
typedef struct _GrabRec *GrabPtr;

/*  typedefs from other places - duplicated here to minimize the amount
 *  of unnecessary junk that one would normally have to include to get
 *  these symbols defined
 */

#ifndef _XTYPEDEF_CHARINFOPTR
typedef struct _CharInfo *CharInfoPtr; /* also in fonts/include/font.h */
#define _XTYPEDEF_CHARINFOPTR
#endif

#endif /* MISC_H */
